Cement-reinforcement.



0. D. COLLIS.

CEMENT REINFORCEMENT.

APPLICATION man AUG-3|. 1914.

1,269,553. Patnted June 11, 1918.

Oliverl). Collis "UNITED, STATES PATENT OFFICE.

o'mvna n. corms, or cnm'ron, IOWA, nssmiwoza '10 THE COLLIS co.,

' A CORPORATION" or IOWA.

F CLINTON, IOWA,

omlm'r-nnmronomrnnr.

I To all whom it may concern:

, ments, of which the following is a specification, reference beinghad therein to the accompanying drawing.

This invention relates to concrete structure and more especially to a cement-pipe reinforcement.

. The primary object of the invention is to produce a structure of the kind specified which shall possess great strength to withstand crushing and other strains which may be imposed upon it, and be free from cracks, or practically so.

' A further object is to produce a reinforced cement pipe structure in such an economical manner that it may be profitably marketed and installed.

A further object is to produce a reinforced cementitious mass, in the form of .pipe, reinforced by a fabricated metallic structure of eat serviceabilty, and capable of withstanding relatively great strains and impacts.

A further object is to produce, in an economical manner, a cement-pipe of appropriate diametral dimensions and thickness, and reinforced by a fabricated metallic structure comprising a plurality of spaced members and instrumentalities welded together at predetermined points so that any line or lines of crushing strain will be intersected by one or another of said members and instrumentalities.

The invention in general seeks to provide a reinforced cement-pipe which is particularly adapted for conduits of relatively large diameter and great length, and which structure, from an operative standpoint, will, in practical use, possess ahigh degree of efficiency and durability and which, structurally considered, will be of the greatest simplicity.

The invention resides broadly in the features of construction, in the combinations Specification of Letters Patent.

Patented June 11, 1918.

Application fled August 31, 1914. Serial'Ho. 859,371.

of elements, and in the particular relative arrangement and aggroupments thereof, all as will be exemplified in the construction hereinafter set forth, and the scope of application of which will be indicated in the claims hereto annexed.

That the invention may be more clearly comprehended, I append hereto drawings illustrating a ossible utilization of the invent1on-in this instance the same being a pi}peit being understood, of course, that ot er possible embodiments and utilizations employing the underlying principles of the invention) fall within the spirit thereof and within the objects contemplated thereby.

In these drawings:

Figure 1 is a view in elevation of a form of dreinforcement embodying my invention; an

Fig. 2 is a similar view of a different form and, for some purposes, a preferable type.

Referring to the drawings, it will be noted that the reference-numeral 1 designates a mass of plastic material, such as cement formed, in this instance, as an annulus to constitute a section of pipe, for example. It may be of any desired thickness and of appropriate diametral dimensions.

Embedded in the cementitious mass" while the same is in a plastic conditionis a fabricated reinforcing structure designated, generally, by the reference-character 2 and which is preferably though not necessarily of metal.

The reinforcing structure preferably comprises two annular members 3 and 4 which (in this instance) are in the form of hoops and formed of any suitable material, such as steel wire of a gage ample to give strength and rigidity. The ends of the wire, when bent to form the hoop, are secured together, as by welding.-

The hoop or member 3 is of lar er diameter than the hoop or member 4 an when these instrumentalities are grouped, as shown, the former encompasses the latter and is spaced'therefrom.

To maintain the hoops in proper spaced relation, to tie them together, and to brace secured attheir ends to each of the hoops,

- as by welding, and are spaced from ,each

- stance,

. SCH

simple but eflicient stances, however,

. other.

type of reinforcement presents a structure. In some init' may be desirable or necessary to provide a structure capable of withstanding greater stresses or strainscrushing strains, for nstance: In Fig. 1' I have 'dISGlOSBCl another practical arrangement with this end in view. In this inin addition to the tie-elements 5, forming a art of the embodiment already described; provide a series of tangential connecting-elements or truss-wlres 6, these being welded or otherwise secured to the spaced hoops at predetermined points. As shown, these connecting-elements or trusswires occupy. a tangential positlon relatively to the hoops and at an angle-1n this 1nstance, approximately at r1ght angles-to the tie-elements. The combination of the radial and tangential elements presents a structure capable of immense resistance.

As a 'carrymg forward of this second type in Fig. 2, shown of reinforcement, have, I a modification'whlch, for most purposes, 13 a preferred form'for thereason that, as

practlce and very severe tests have demonstrated, it is capable of withstanding crush- .ing and other strains greater than any 81mllar form of structure heretofore proposed, so far as I am now aware. In this instance,

a greater number of. truss-wires 7 are em plo ed than in the embodiment just de- 'lied. These are welded or otherwise secured to the spaced hoops 3 and i at points on the one intermediate of points on the other. Moreover, in this type, a plurallty of these truss-wires are interposed between the radial tie-elements 5.

This fabricated reinforcement, whatever its form, is constructed, complete, before being embedded in or made a part of the mass of cement. Preferably, in practice, the inner hoops are spaced, say, gths of-an inch from the inner wall of the pipe, whllc the outer hoop is disposed, say, a half inch from the outside surface thereof.

This fabricated structure is such that it not only efi'ects reinforcement of the cement formation to a remarkable degree, as skillfully made tests have demonstrated, but it and the embodying cement act as a unit, since there" is a bond of high degree between the cement and the metal.

From the foregoing, it will be perceived that I have succeeded in devising a reinforced cement-structure which is well adapted to achieve the several objects and ends in view. The structure is simple and compact in form the parts of WhlCh the fabricated structure'is constituted are simple and stained in the foregoing are readily welded together, as by we -I known electric welding methods.

As many changes can be made in the described construction .and many widely dif- .ferent embodiments of this invention can be provided without departing from the spirit thereof, it is intended that all matter condescription and shown in the accompanying drawings shall be interpreted as illustrative and not in a limiting sense. It is also to be understood that the language used in the appended claims is intended to cover all of t e features of the invention, in the generic as well as in the specific sense.

' What I claim is:

1. A reinforcing instrumentality for wncrete structures, comprising an outer memher; an inner member surrounded by and in approximately the same radial plane as saidinner and outer members; and a plura ty of 7 cross brace members disposed in angular relation to said oppositely disposed radial tie members and approximately tangentiallyeto rs one of saidmembers, said bracemem being welded to both inner and outer members and said radial tie members.

3. A reinforcing instru'mentality for concrete structures, comprising a plurality of circular wire members arranged one within the other and in approximatel radial plane; oppositely disposed radial tie members in approximate alinement welded to said inner and outer members andextending beyond said members on opposite sides thereof; and a series of cross brace members some of which are arranged tangentially to said inner member, at right angles to said radial tie members, and having a ortion in engagement with said outer memer; said inner and outer members, radial tie members and cross braces being welded together to form an integral structure.

4. As an article of manufacture a concrete unit comprising a tubular cementitious mass and a reinforcing structure embedded therein and including a reinforcing instrumentality comprising a plurality of circular wire members arranged one within the other and in approximately the same radial lane; oppositely disposed radial tie memers in approximate alinement welded to the same said inner and outer members and extending bers and cross braces being welded together beyond said members on opposite sides to form an integral structure. thereof; and a series of cross braces some In testimony whereof I afiix my signature of which are arranged tanfentially to said inpresence of two witnesses.

6 inner member, at right ang es to said radial OLIVER 1). COLLIS.

tie members and hav1ng a. portion in en- Witnesses: gagement with semi outer member; said inv FRIEDA E. Tm'rscmmm,

ner and outer members, radial tie m'em- ANNA. Buns. 

